User: Guest  Login
Title:

Multigrid transfers for nonsymmetric systems based on Schur complements and Galerkin projections

Document type:
Zeitschriftenaufsatz
Author(s):
Wiesner, T. A.; Tuminaro, R. S.; Wall, W. A.; Gee, M. W.
Abstract:
A framework is proposed for constructing algebraic multigrid transfer operators suitable for nonsymmetric positive definite linear systems. This framework follows a Schur complement perspective as this is suitable for both symmetric and nonsymmetric systems. In particular, a connection between algebraic multigrid and approximate block factorizations is explored. This connection demonstrates that the convergence rate of a two-level model multigrid iteration is completely governed by how well the...     »
Keywords:
algebraic multigrid, Schur complement, Galerkin projection, nonsymmetric problems
Dewey Decimal Classification:
620 Ingenieurwissenschaften
Journal title:
Numerical Linear Algebra with Applications
Year:
2014
Journal volume:
21
Journal issue:
3
Pages contribution:
415-438
Covered by:
Scopus
Reviewed:
ja
Language:
en
Fulltext / DOI:
doi:10.1002/nla.1889
Status:
Verlagsversion / published
 BibTeX